Inpatient Modifiers

Tags: modifiers inpatient compliance

Overview

Modifiers provide additional information about services rendered. Critical for inpatient profee billing.

Key Inpatient Modifiers

AI - Principal Physician of Record

• Use: Attending physician managing overall care
• Frequency: Once per admission
• Medicare: Required for initial hospital care

AI Modifier

Only the attending physician bills AI. Consultants do not use this modifier.

25 - Significant, Separately Identifiable E/M

• Use: E/M on same day as procedure
• Attached To: E/M code
• Example: 99232-25 + procedure code

-57 - Decision for Surgery

• Use: E/M resulting in surgery decision
• Attached To: E/M code
• Timing: Day before or day of surgery
• Global Period: 90-day procedures only

-59] - Distinct Procedural Service

• Use: Separate procedure from other services
• Attached To: Procedure code
• Alternative: XS (separate site)

XE, XS, XP, XU - Medicare Preferred

Modifier	Description
-XE	Separate encounter
-XS	Separate site/structure
-XP	Separate practitioner
-XU	Unusual non-overlapping service

Common Scenarios

Scenario	Modifier
E/M + Procedure same day	25 on E/M
Decision for surgery	57 on E/M
Two procedures same day	59 or XS on procedure
Attending physician	-AI on initial care

Modifier Overuse

Excessive use of modifier 59 is an audit trigger. Use X-modifiers when appropriate for Medicare.

00 Inpatient ProFee Coding MOC Modifier 25 vs 57 NCCI Edits for Inpatient